Air-tight cap for vessels



March 2 1926. L TAMUR AIR TIGHT GAP FOR VESSELS Filed Jan. 6, 1925 I N VEN TOR. Izo Twzzwra/ ATTORNEYS.

Patented 'Mar. 2, 1926.

PATENT OFFICE.

120 TAMURA, OF OSAKA, JAPAN.

[AIR-TIGHT car FOR VESSELS.

Application filed January 6, 1925. Serial No. 888.

To all whom it may concern:

Be it known that I, Izo TAMURA, a subiect of the Emperor of Japan, and aresident of N o. 8, Temmabashi-suji 4-chome, Kita-ku,

Osaka, Empire of Japan, have invented new and useful Improvements inAir-Tight (laps for Vessels, of which the following is a specification.

My invention relates to air-tight caps for vessels, and has for itsobject to obtain caps of the class specified which are easily andproperly applied to bottles, cups, or other vessels with completeair-tightness. Another object of my invention is to obtain caps whichcan be readily removed from vessels which they have been applied towithout spoiling them so that they can be used again and again. Afurther object of my invention is to get the caps easily and firmlysealed to vessels with a full reliability,

whereby no one can touch the contents without breaking away the seals.

Referring now to the accompanying drawings, wherein Fig. 1 is a sideelevation of one embodiment of my invention, partly in section.

Fig. 2 is the plan view of the annular rubber piece shown in Fig. 1.

Fig. 3 is a side elevation showing the cap in Fig. 1 applied to a cup,partly in section.

Fig. 4 is asimilar view of a modification to that shown in Fig. 1.

Fig. 5 is a plan view of the sealing piece shown in Fig. 4.

Fig. 6 is a similar view to Fig. 3 of the modification in Fig. 4.

In Fig. 1, my air-tight cap comprises an annular body, having a bottom 1and an annular flange 2. The flange 2 is suitably bent back to grasp anannular rubber piece 3 at its outer edge. Along the side of the body areprovided a number of holes 4. The width of the rubber piece 3 is suchthat it is sufficient to pass over the holes 4, when bent in along theside of the body. The piece is shown in Fig. 2 in plan view.

My improved cap is applied to a vessel such as a cup 8 in Fig. 3, withits rubber piece 3 on the cup tip, and pressed down to cover thetipwards end. The annular rubber piece is then bent in between the endand the body side to pack the same. During this operation, aircompressed in the vessel is permitted to flow out through the holes 4,while at the end of the operation these holes are closed by the packingportion of the rubber piece-3, and an air-tight enclosure is perfectlyformed.

For the removal of the cap, I slightly pull up same by its edge. Thenthe packing is loosed and the holes 4 communicate to w1thin the vesselto allow a free passing of open air into the vessel. It is obvious thatsuch a free communication.facilitates the removal of the cap from thevessel tip- In Figs. 4 to 6, I show a modification of my improvedair-tight cap, suitable for a bottle sealing. The holes 4 are largerthan that in Fig. 1, in diameter, for the purpose hereinafter described.The top end of the bottle 9 in Fig. 6 is inserted into the cap in thesame manner as explained for the former embodiment. An annular sealingpiece 5 of suitable material, having a tongue 6, is then ap-' plied tothe cap around the latter to cover the series of holes 4 and pressedinto the holes 4 at its portions 7 registering to the holes 4. Thebottle end is provided with a peripheral groove registering orcorresponding to the holes 4, and consequently the inward projectionsformed by the pressing in of the portions 7 firmly engage the groovehaving the rubber packing 3 therebetween, having the cap sealed. 1

For the removal of the cap, or for the unsealing, I pick the tongue 6and thereby tear away the sealing 5. The rubber packing 3 then unengagesthe peripheral groove, and the cap is ready to be removed. Now that thesealing piece 5 is broken away, no one can reseal the bottle, unless hehas quite a new sealing piece as well as pressing means above mentioned.This means a perfect reliability of the sealing.

Having now articularly described the na- 'ture of my said invention andin what man nor the same is to be performed, I declare that what I claimis The combination with a receptacle having a mouth provided on itsouter surface with an annular groove, of a cap fitting over said mouthand including a disk provided with a depending skirt, said skirt havingits lower edge bent to form an annular pocket, a resihent ring havingits outer edge arranged in said pocket and adapted to lie between theouter surface of the'receptacle mouth and and engaging the resilientring for forcing the inner surface of the skirt of the cap and thelatter into said groove, said band being to enter said groove, saidSkirt being proprovided With a tongue adapted to be 10 .vided -with acircumferential series of apergrasped by the operator for unsealing the5 tures, and a sealing band arranged around receptacle.

the skirt of the cap and having projections In testimony whereof I aflixmy signature. extending through the apertures of the cap IZO TAMURA.

